Exhibit 18

question 13

Short Answer

Exhibit 18.8.Quarterly sales of a department store for the last 7 years are given in the following table. The Excel scatterplot shown above indicates that the quarterly sales have an increasing trend and seasonality.Therefore,the linear regression model,Sales = β₀ + β₁Qtr1 + β₂Qtr2 + β₃Qtr3 + β₄t + ε with three seasonal dummy variables Qtr1,Qtr2 and Qtr3,and the decomposition method are proposed to make sales forecasts.For the regression model,the following Excel partial output is available. Refer to Exhibit 18.8.What is the regression equation for the linear trend model with seasonal dummy variables?

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Definitions:

Reinforcement

The process of encouraging or establishing a pattern of behavior by offering rewards or positive outcomes.

Punishment

A form of corrective measure aimed at reducing undesired behavior by using negative consequences or removal of positive stimuli.

Delayed Schedule

A situation where planned events or activities occur later than originally planned or intended, often resulting in setbacks or disruptions.

Rewards

Incentives or benefits given to individuals or groups to promote desired behaviors or outcomes.